Of Funds in the Purchase of Materials and Services. Coordinating the Purchase of Materials and Services for all Functions. Purchasers Must Be Familiar with What’s Out There, What It Costs, and How It Can Benefit the Company. Purchasers Look for the Best Combination of Quality, Price, Payment Terms and Delivery Speed They Then Negotiate Contracts and Policies with Suppliers. They also Monitor Deliveries to Ensure Compliance with Contracts Expediting, When Requested and Warranted, the Delivery of Goods and Services. Maintaining the Master Vendor and Commodity List.